address comments

diff --git a/examples/step-28/step-28.cc b/examples/step-28/step-28.cc
index ffb92c00f78d60f77d2bb616add3ae90f2f36e4f..f3e3be760e4cef567a2cbe179b2e2d5f265cf975 100644 (file)
--- a/examples/step-28/step-28.cc
+++ b/examples/step-28/step-28.cc
@@ -1141,10 +1141,11 @@ namespace Step28
   // used to determine when convergence of the inverse power iteration has
   // occurred. In addition, we have a constructor of this class that sets all
   // these values to their default values, a function
-  // <code>declare_parameters</code> that described to the ParameterHandler
-  // class already used in step-29 what parameters are accepted in the input
-  // file, and a function <code>get_parameters</code> that can extract the
-  // values of these parameters from a ParameterHandler object.
+  // <code>declare_parameters</code> that describes to the ParameterHandler
+  // class what parameters are accepted in the input file, and a function
+  // <code>get_parameters</code> that can extract the values of these
+  // parameters from a ParameterHandler object. See also step-29 for another
+  // example of using ParameterHandler.
   template <int dim>
   class NeutronDiffusionProblem
   {